Merge release 1.73.x to main (#336)

* remove cronet files

* remove cronet files

* Sync c-core 1.72.0-pre1

* use c++17 for swift package

* update ios deployment target to 15.0

* Sync c-core 1.72.0

* Sync c-core 1.73.0-pre1

* include additional files

* Re-sync c-core 1.73.0-pre1

* exclude inc files from swift package

* upgrade abseil swift to 0.20250127.1 (#330)

* Sync c-core 1.73.0-pre2

* Sync c-core 1.73.0

* Sync c-core 1.73.1

Author: HannahShiSFB

Package.swift

@@ -24,7 +24,7 @@ let package = Package(
   ],
 
   dependencies: [
-    .package(url: "https://github.com/firebase/abseil-cpp-SwiftPM.git", "0.20240722.0"..<"0.20240723.0"),
+    .package(url: "https://github.com/firebase/abseil-cpp-SwiftPM.git", "0.20250127.0"..<"0.20250128.0"),
     .package(url: "https://github.com/firebase/boringssl-SwiftPM.git", "0.32.0"..<"0.33.0"),
   ],
 

gRPC-C++.podspec

@@ -22,7 +22,7 @@
 Pod::Spec.new do |s|
   s.name     = 'gRPC-C++'
   # TODO (mxyan): use version that match gRPC version when pod is stabilized
-  version = '1.73.0-pre1'
+  version = '1.73.1'
   s.version  = version
   s.summary  = 'gRPC C++ library'
   s.homepage = 'https://grpc.io'

gRPC-Core.podspec

@@ -21,7 +21,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC-Core'
-  version = '1.73.0-pre1'
+  version = '1.73.1'
   s.version  = version
   s.summary  = 'Core cross-platform gRPC library, written in C'
   s.homepage = 'https://grpc.io'

gRPC-ProtoRPC.podspec

@@ -21,7 +21,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC-ProtoRPC'
-  version = '1.73.0-pre1'
+  version = '1.73.1'
   s.version  = version
   s.summary  = 'RPC library for Protocol Buffers, based on gRPC'
   s.homepage = 'https://grpc.io'

gRPC-RxLibrary.podspec

@@ -21,7 +21,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC-RxLibrary'
-  version = '1.73.0-pre1'
+  version = '1.73.1'
   s.version  = version
   s.summary  = 'Reactive Extensions library for iOS/OSX.'
   s.homepage = 'https://grpc.io'

gRPC.podspec

@@ -20,7 +20,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC'
-  version = '1.73.0-pre1'
+  version = '1.73.1'
   s.version  = version
   s.summary  = 'gRPC client library for iOS/OSX'
   s.homepage = 'https://grpc.io'

include/grpcpp/version_info.h

@@ -20,8 +20,8 @@
 
 #define GRPC_CPP_VERSION_MAJOR 1
 #define GRPC_CPP_VERSION_MINOR 73
-#define GRPC_CPP_VERSION_PATCH 0
-#define GRPC_CPP_VERSION_TAG "pre1"
-#define GRPC_CPP_VERSION_STRING "1.73.0-pre1"
+#define GRPC_CPP_VERSION_PATCH 1
+#define GRPC_CPP_VERSION_TAG ""
+#define GRPC_CPP_VERSION_STRING "1.73.1"
 
-#endif  // GRPCPP_VERSION_INFO_H
+#endif // GRPCPP_VERSION_INFO_H

src/core/client_channel/backup_poller.cc

@@ -62,10 +62,15 @@ static grpc_core::Duration g_poll_interval =
 static bool g_backup_polling_disabled;
 
 void grpc_client_channel_global_init_backup_polling() {
+#ifndef GRPC_DO_NOT_INSTANTIATE_POSIX_POLLER
   // Disable backup polling if EventEngine is used everywhere.
   g_backup_polling_disabled = grpc_core::IsEventEngineClientEnabled() &&
                               grpc_core::IsEventEngineListenerEnabled() &&
                               grpc_core::IsEventEngineDnsEnabled();
+#else
+  // EventEngine polling not supported, keep using the backup poller.
+  g_backup_polling_disabled = false;
+#endif
   if (g_backup_polling_disabled) {
     return;
   }
@@ -155,11 +160,21 @@ static void g_poller_init_locked() {
   }
 }
 
+static bool g_can_poll_in_background() {
+#ifndef GRPC_DO_NOT_INSTANTIATE_POSIX_POLLER
+  return grpc_iomgr_run_in_background();
+#else
+  // No iomgr "event_engines" (not to be confused with the new EventEngine)
+  // are able to run in backgroung.
+  return false;
+#endif
+}
+
 void grpc_client_channel_start_backup_polling(
     grpc_pollset_set* interested_parties) {
   if (g_backup_polling_disabled ||
       g_poll_interval == grpc_core::Duration::Zero() ||
-      grpc_iomgr_run_in_background()) {
+      g_can_poll_in_background()) {
     return;
   }
   gpr_mu_lock(&g_poller_mu);
@@ -179,7 +194,7 @@ void grpc_client_channel_stop_backup_polling(
     grpc_pollset_set* interested_parties) {
   if (g_backup_polling_disabled ||
       g_poll_interval == grpc_core::Duration::Zero() ||
-      grpc_iomgr_run_in_background()) {
+      g_can_poll_in_background()) {
     return;
   }
   grpc_pollset_set_del_pollset(interested_parties, g_poller->pollset);

src/core/xds/grpc/xds_common_types_parser.cc

@@ -113,14 +113,6 @@ std::optional<grpc_resolved_address> ParseXdsAddress(
 
 namespace {
 
-bool XdsSystemRootCertsEnabled() {
-  auto value = GetEnv("GRPC_EXPERIMENTAL_XDS_SYSTEM_ROOT_CERTS");
-  if (!value.has_value()) return false;
-  bool parsed_value;
-  bool parse_succeeded = gpr_parse_bool_value(value->c_str(), &parsed_value);
-  return parse_succeeded && parsed_value;
-}
-
 // CertificateProviderInstance is deprecated but we are still supporting it for
 // backward compatibility reasons. Note that we still parse the data into the
 // same CertificateProviderPluginInstance struct since the fields are the same.
@@ -250,7 +242,7 @@ CertificateValidationContextParse(
     certificate_validation_context.ca_certs =
         CertificateProviderPluginInstanceParse(
             context, ca_certificate_provider_instance, errors);
-  } else if (XdsSystemRootCertsEnabled()) {
+  } else {
     auto* system_root_certs =
         envoy_extensions_transport_sockets_tls_v3_CertificateValidationContext_system_root_certs(
             certificate_validation_context_proto);

src/core/xds/grpc/xds_http_filter_registry.cc

@@ -90,9 +90,7 @@ XdsHttpFilterRegistry::XdsHttpFilterRegistry(bool register_builtins) {
     RegisterFilter(std::make_unique<XdsHttpFaultFilter>());
     RegisterFilter(std::make_unique<XdsHttpRbacFilter>());
     RegisterFilter(std::make_unique<XdsHttpStatefulSessionFilter>());
-    if (XdsGcpAuthFilterEnabled()) {
-      RegisterFilter(std::make_unique<XdsHttpGcpAuthnFilter>());
-    }
+    RegisterFilter(std::make_unique<XdsHttpGcpAuthnFilter>());
   }
 }